Brass Push>Connect Tube Fitting, 0.50 Inch Tube OD To 1/2-14 Male NPT Swivel, 90 deg Elbow

Reusability is actually built into the design on these. You push the tube in to connect and press the collet ring to release, and that mechanism is meant to hold up through repeated cycles. The brass body with nickel plating adds to the longevity. That said, like any fitting that sees regular handling, keeping an eye on the O-ring over time is smart. It runs a Buna-N seal standard, with Viton available if your application calls for it.

it’s a 90 degree elbow and the male NPT side is a swivel, so you can get your angle where you need it and then orient the NPT connection without having to fight the tubing.